Cast

Plot Overview

Notes

Arc Advancement

Happenings

Characters

Referbacks

Trivia

The Show

Behind the Scenes

Allusions and References

420 — The slang term for cannabis culture serves as the title of the episode, with April 20 (the date that fell one day after the episode's original airdate (of April 19)) being the unofficial "holiday" celebrating the counterculture of marijuana consumption.

Chitty Chitty Bang Bang — Brian and Stewie — with other Quahog residents eventually joining in — perform a pro-marijuana song called "Bag o' Weed," sung to the tune of "Me Ol' Bamboo," a song from the 1968 movie starring Dick Van Dyke and Sally Ann Howes.